/*
 * jPOS Project [http://jpos.org]
 * Copyright (C) 2000-2015 Alejandro P. Revilla
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Affero General Public License as
 * published by the Free Software Foundation, either version 3 of the
 * License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Affero General Public License for more details.
 *
 * You should have received a copy of the GNU Affero General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package org.jpos.ui.factory;

import org.jdom.Element;
import org.jpos.ui.UI;
import org.jpos.ui.UIFactory;

import javax.swing.*;
import javax.swing.event.HyperlinkEvent;
import javax.swing.event.HyperlinkListener;
import javax.swing.text.html.HTMLDocument;
import javax.swing.text.html.HTMLFrameHyperlinkEvent;

/**
 * @author Alejandro Revilla
 *         <p/>
 *         Creates an html browser/editor
 *         i.e:
 *         <pre>
 *          &lt;html editable="false" follow-links="true" scrollable="true"&gt;
 *            http://jpos.org
 *          &lt;/html&gt;
 *         </pre>
 * @see org.jpos.ui.UIFactory
 */
public class HtmlFactory implements UIFactory {
	public JComponent create(UI ui, Element e) {
		try {
			JEditorPane editorPane = new JEditorPane(e.getText());
			editorPane.setEditable(
					"true".equals(e.getAttributeValue("editable"))
			);
			if ("true".equals(e.getAttributeValue("follow-links")))
				editorPane.addHyperlinkListener(new Listener());
			return editorPane;
		} catch (Exception ex) {
			return new JLabel(ex.getMessage());
		}
	}

	static class Listener implements HyperlinkListener {
		public void hyperlinkUpdate(HyperlinkEvent e) {
			if (e.getEventType() == HyperlinkEvent.EventType.ACTIVATED) {
				JEditorPane pane = (JEditorPane) e.getSource();
				if (e instanceof HTMLFrameHyperlinkEvent) {
					HTMLFrameHyperlinkEvent evt = (HTMLFrameHyperlinkEvent) e;
					HTMLDocument doc = (HTMLDocument) pane.getDocument();
					doc.processHTMLFrameHyperlinkEvent(evt);
				} else {
					try {
						pane.setPage(e.getURL());
					} catch (Throwable t) {
						t.printStackTrace();
					}
				}
			}
		}
	}
}

